Internal Tooth, Crinkle, Cup, Full Washers, Form A
A2/304 Stainless Steel, Fibre, Brass, TPE, Stainless Steel
37 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
16.2 mm, 5.36 mm, 2.25 mm, 13 mm, 6.5 mm
5.8 mm, 2 mm, 3.5 mm, 0.28 mm, 1.1 mm
M24, M3, M5 (Form A), M2.5, M5
DIN 125A, BS 4320B, DIN 127B, BS 4320:1968, DIN 7980